Planning Applications and Permissions in Westminster





Planning Applications and Architects in Westminster,London|Extension Architecture / Planning Drawings , Planning Consultants Westminster

Extension Architecture is an experienced team of planning consultants and Architectural designers. They are here to provide friendly and helpful services assisting you from initial design ideas through to planning, building control and into a reality. Our success rate is nearly 100% from house and basement extensions, loft and garage conversions, change of use applications, new builds and commercial planning.

Any work under Westminster Council, we would undertake a property site assessment by looking into its history and context of the site with its surroundings. In the process of design we aim to be up to date with all the regulations, taking into consideration the conservation and heritage sites and we approach it with a sympathetic proposal to consider the characteristic surroundings.

The rules and regulations for planning application and building regulation vary from council to council. We always keep ourselves aware of the changes in the Westminster Borough. Additionally, we would take time to study the reasons as to why the other properties get approved and refused within the area helping us to better our understanding and maintain a good success rate.

Our in house experienced team are always there to help you.

Call us to find out more on 0203 409 4215.

We provide a full range of services with regards to all manner of planning permission and drawing types in the Westminster area, including:

  • Planning Drawings For Applications (including plans, sections, elevations etc)
  • Retrospective Planning
  • Building Regulation Drawings for Building Control
  • Consultancy For Commercial Development
  • 3D Visualisations
  • Interior Design
  • Spatial Planning and Layout
  • Feasibility Consultancy


Call: 0203 409 4215



Our Prices & Case Study


Single Storey Extension

Double Storey Extension

Convert to Flat

Loft Conversion

Basement Extension

3D Visualisation


New Builds

Change of Use


Our experienced team is ready to help you and provide FREE planning advice. We are here to help so pick up the phone and call us at 0203 409 4215.



Key Westminster Council Planning Department contact details

Need to get in touch with Westminster Council Planning Department or Building Controls Department? Details below.

Westminster Council Planning Department Phone 020 7641 2513
Westminster Council Planning Dept Fax 020 7245 5510
Westminster Council Planning Department Website
Westminster Council Planning Dept Email
Westminster Council Planning Department Address P.O. Box 240, Westminster City Hall, 64 Victoria Street, London SW1E 6QP
Westminster Council Planning Dept Opening Hours 9am – 5pm : Monday – Friday

Westminster Council Contact Information


Want to speak with Westminster Council? In one of the following postcodes NW1, SW1, W1, W2, W9, W10, WC1 and WC2? Details below.

We can help and give free advice in: Bayswater, Belgravia, Covent Garden, Fitzrovia, Holburn, Hyde Park, Knightsbridge, Lisson Grove, Maida Vale, Mayfair, Marylebone, Millbank, Regents Park, Victoria, Paddington, Pimlico, Queen’s Park, St. John’s Wood, Soho, the West End and the following postcodes NW1, SW1, W1, W2, W9, W10, WC1 and WC2. Residential Sevice : planning permissions and designs for single/double storey side/ rear extension, basement extension, loft conversion, dormer extension, rooftop terrace. House conversion into flats, window/door elevations. annex/maisonette/conservatory/garage conversion, interior/exterior design, garden design, new build development  Commercial Service: planning permissions and designs for restaurant, bar, cafe, retail shops, stores, hotel. change of use, Planning applications, building regulation drawings.

Westminster Council Phone 0207 641 6000
Westminster Council Website
Westminster Council Email Online Enquiry Form
Westminster Council Address P.O. Box 240, Westminster City Hall, 64 Victoria Street, London SW1E 6QP